<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script src="js/data.js"></script>
</head>
<body>
<div id="div1">
<span v-html="" :type="">{{count}}</span>
    <input type="button" value="+1" @click="handlerClick($event)"></input>
</div>
<script src="js/vue.js"></script>
<script>
    new Vue({
        el: '#div1',
        data: {
            count: 1
        },
        computed: {}, filters: {},
        watch: {}, created() {
        },
        mounted() {
        }, beforeDestroy() {
        },
        methods: {
            handlerClick(e){
                console.log(e.target)
                this.count++
            }
        }
    })
</script>
</body>
</html>